Dorman 43-1803 rear leaf spring for the 2008-2016 Ford F-450 Super Duty and other vehicles holds the weight and payload on the rear axle. Also called a leaf spring assembly, it is a key part of suspension performance and passenger comfort.
- Part of the Dorman OE Solutions line
- Nine-leaf steel pack with a load rate of 6100 lb
- Up-turned eye at both ends
- Bushings included with the spring
- Replaces leaf springs damaged by overloading, collision, cracking or corrosion
Quick facts
- Part: Dorman 43-1803 leaf spring
- Also called: leaf spring assembly
- Fits: 2008-2016 Ford F-450 Super Duty and other vehicles
- Position: Rear
- Material: Steel
- Condition: New
A rear end that sags, a cracked or broken leaf or visible corrosion on the pack can mean a leaf spring needs replacing. Before you replace it, rule out worn shocks, loose U-bolts and worn bushings, which can cause similar ride and sag complaints.
Fits
It fits the 2008-2016 Ford F-450 Super Duty and the 2008-2016 Ford F-550 Super Duty; both trucks take two rear springs. This listing is one spring, and the other side of that axle is normally done at the same time.
Specifications
Fit and size
- Position: rear
- Quantity per vehicle: 2
- Leaf width: 3 in
- Pack thickness: 4.951 in
- Arch length: 4.75 in
- Length axis 1 and axis 2: 25 in each
- Length B: 30.75 in
- Load rate: 6100 lb
Build and materials
- Material: steel
- Leaves: 9
- Grade: standard
- End attachments: up-turned eye at both ends
- Bushings: included
- Helper spring: no
- Axle modification needed: no
- Condition: new
In the box
One leaf spring with its bushings. Mounting hardware is not included, so plan on new bolts, since the old ones may not be reusable.
Interchange: 43-1801 · 43-1803DAY · 043-1803-00
9C345A975AA · 9C3Z5560AA
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Will Dorman 43-1803 work as one of the 2008-2016 Ford F-450 Super Duty leaf springs?
Yes. Dorman 43-1803 is a rear leaf spring for the 2008-2016 Ford F-450 Super Duty, and that truck takes two of them.
Does the part suit 2008-2016 Ford F-550 Super Duty leaf springs on the rear axle?
Yes. This rear spring fits the 2008-2016 Ford F-550 Super Duty, which also takes two.
How many leaves does this Dorman leaf spring have, and what is its load rate?
The Dorman 43-1803 spring has nine leaves and a load rate of 6100 lb.
Does the 43-1803 spring come with bushings or mounting bolts?
Yes, the bushings are included. Mounting hardware is not, so plan on new bolts.
How can I tell if a rear leaf spring is cracked or worn out?
With the engine off and the truck parked, look for cracked or broken leaves, corrosion or a rear end that sits low. A shop can inspect it if you are unsure.
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